Paper box



Nov. 24, 1936..

c. L. GLAFF PAPER BOX Original Filed June 13, 1935 rammed Nav. 24, 193eUNITED STATES Original application June 13, 1935, Serial No.

26,478. Divided and this application November 22, 1935, Serial No.51,161

3 Claims.

,This invention relates to paper boxes and a method of making them andis a division of an application filed byme on June 13,' 1935, SerialNumber 26,478. i

An object of the present invention is to form a rigid box out of afoldable blank wherein the end aps are foldable over and placed astrideinturned side wings but in the present instance it is 'an object-to sodesign the foldable end flaps that afterthey have been properlypositioned during lthe completion of the box, well finished side edgeswill be presented by the outer thick'- nessesof the end ilaps, insteadof raw unsightly' edgessuch as heretofore exposed.

A further object is to so l'cut the end folds of vthe blank thatportions thereof can be utilized as reinforcements of the corners of thefinished box. With the foregoing and other objects in View which willappear as the description proceeds, the

a blank used in -the manufacture of the box.

Figure 2 is a similar View of said end portion following theinturning'of the side ears of the end ap. l

Figure 3 is a perspective view of one .corner portion of the completedboxmade from tlev blank illustrated in Figure 2. l

Figure 4 is ahorizontal section on Figure 3. v v

Referring to the guresfby characters of reference, I3 is the bottomportion of a blank divided by scores I4 from side portions I5, foldableend flaps I6 and side wings II. The side wings are divided from endila-ps IG by slits I8 which extend back into the blank from the endsthereof. These slits are so shaped and -located that each side wing `I1is made up of a narrow free end portion or tongue the rear portion ofthe'inner side edge of which is curved laterally to one corner of thebottom Il. 'I'hus ears are formed at the sides of each end flap I6 andextend up to the wings I'I, following the contour of the inneredgesthereof. The ears at each side and which have been indicated at I0 and20, are separated by a transverse Figure 1 is a plan view of one endportion of slit 2| alining with the score 22 along which flap I6 isadapted to be folded. A suitable adhesive 23 is applied to one surfaceof the flap I6 betweenthe score 22and the end of the flap and thisadhesive also extends over the corresponding surface of 5 each of theears I9 and 20.

Following the cutting and creasing of the blank the side ears I9 whichconstitute finishing ears for the end flaps I6 are folded toward eachother so as to lap and be affixed to the end flaps as 1o shown in Figure2. The side portions I5 are then extended perpendicular to the bottomportion I3 and the side wings Il are'extended toward each other.Thereafter the end aps I6 each of which appears as in Figure 2, arefolded upwardly over l5 the inturned side Wings so that the finishingears I9 `as well as the side Wings will thus be stradd1ed` by the'endflaps. The side ears 20, however, will be permitted to extend along theinner surfaces of the side portions I5 as shown in Figures 3 and4` 20lwhere they will be joined to the side portions by the ladhesive and thusconstitute reinforcing ears.

As a result of the Lconstruction described not only will the side edgesof the outer thicknesses of the'end aps presentnished rounded surfaces-25 formed by the finishing paper 24 on the outer surface Vof the blankbutthe ears 20 extending inwardly from the end flaps and affixed to theside portions I5 will impart added strength to the corners of the box.

It is to be understood that the term ,box as herein used has referenceto either the body portion or the lid-of a box because both of theseparts can be constructed in the manner disclosed.

In order that the top edges ofthe folded end '35 flaps may lie in thesame plane with the top edges of the side walls, it is generallydesirable tocut j away portions of the top edges of the side wings line4-4 as indicated at 40 so as to allow the end flaps and their inturnedears to be properly located.

What is claimed is:

v1. A paper box formed o f a blank of paper board having one surfacecoated with finishing paper,v said blank being shaped to provide side rwalls, side wings, end aps, and oppos'ed pairs of 45 side ears on theend flaps extending the full length of the flaps, said ears abutting,one. side ear of each pair being inturned, said inturned ears beingextended toward each other, and the end flaps being folded over andafiixed to the side wings 50 thereby to conceal the raw edges of theinturned ears between the folds of the end ilaps, the other lears oneach'end flap lapping and being affixed ,to the side walls and extendingtothe top edg'es thereof. y Y

2. A paper box including a blank of paper board having one surfacecoated with a thickness oi' nishing paper, said blank being shaped toprovide side walls, side wings. foldable end flaps, and a pair ofabutting outer and inner ears at each side of each end ap, each pairextending the entire length of the flap, said side wings being extendedtoward each other and said end flaps straddlng and being afxed to theinturned side wings, the inner ear of each pair being extended betweenthe folds of the end ap, thereby to conceal its raw edges, and the outerears of the end flaps being extended away from the' folded end naps andamxed to' and extending to the top edges of the adjacent side portionsof the blank.

3. A paper box formed of a single blank shaped toprovide bottom and sideportions, side wings and foidable end iiaps, there being a finishing earand a reinforcing ear at each side of each ap, said ears abutting andforming pairs extending throughoutthe length of each end ap, said11nishing ears being folded onteand aflxed to the side portions of theend ap and said end iiaps each being folded into position astride o'fthe side wings and aixed thereto to conceal the finishing ears, and saidreinforcing ears being extended away from the end aps and amxed to thesides to stiien the corners of the box.

